CN203351679U - Seal body of 3V lithium battery - Google Patents
Seal body of 3V lithium battery Download PDFInfo
- Publication number
- CN203351679U CN203351679U CN2013203528034U CN201320352803U CN203351679U CN 203351679 U CN203351679 U CN 203351679U CN 2013203528034 U CN2013203528034 U CN 2013203528034U CN 201320352803 U CN201320352803 U CN 201320352803U CN 203351679 U CN203351679 U CN 203351679U
- Authority
- CN
- China
- Prior art keywords
- seal body
- annular
- lithium battery
- cover
- pressure release
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model discloses a seal body of a 3V lithium battery, which comprises a lower seal body cover and an upper seal body cover, wherein a sealing structure is arranged between the lower seal body cover and the upper seal body cover; a circular pressure release hole is formed in the middle of the lower seal body cover; an aluminum membrane is adhered to the lower seal body cover to cover the circular pressure release hole; the upper seal body cover is provided with a bulged cap; and gas vents are formed in the bulged cap. The seal body is characterized in that the bulged cap is internally equipped with a washer; the washer is an annular body with a center hole; the lower end of the annular body presses the aluminum membrane on the lower seal body cover; the center hole corresponds to the circular pressure release hole; vent holes are formed in the annual body of the washer; and the center hole is communicated with the gas vents by the vent holes. The seal body has the advantages that the lower end of the washer presses the edge of the aluminum membrane; after the gas pressure of the battery rises to the normal bursting pressure, gas can be burst normally from the circular hole in the middle of the aluminum membrane; the removal of the aluminum membrane from the edge in advance before the normal bursting pressure is reached due to a poor adhesion technology is avoided; and the leakage of an electrolytic solution is prevented.
Description
Technical field
The utility model relates to a kind of 3V lithium battery, especially relates to a kind of seal body of 3V lithium battery.
Background technology
The seal body structure of traditional 3V lithium battery comprises seal body lower cover, PTC, seal body upper cover, aluminium film and sealing ring, in the middle of the seal body lower cover, has an annular protrusion, and the centre of annular protrusion is provided with the pressure release circular hole; Aluminium film paste, on annular protrusion, covers circular hole, and its effect is the solution leakage that prevents inside battery, and during the inside battery pressure abnormity, air pressure inside is broken through aluminium film on the pressure release circular hole, discharges from the steam vent of seal body upper cover, thereby plays decompression function simultaneously.As follows in the attached technique of Aluminium film paste: as first at aluminium film surface, to attach PE film, the aluminium film is adsorbed onto on the seal body lower cover annular protrusion of stainless steel, with the high temperature aluminium film of perming, because PE is subject to thermal contraction, melting, so the aluminium film is in instantaneously heated situation, can stick on the annular protrusion of lower cover, the pressure release circular hole is sealed.Limitation due to the attached technique of Aluminium film paste, when the air pressure of inside battery slowly rises to while being greater than about 1.00Mpa but does not reach the pressure release standard, the aluminium film can be as normal the same from middle circular hole explosion, and may, from edge takes off, will cause like this leakage of battery.
Summary of the invention
Technical problem to be solved in the utility model is to provide and a kind ofly both can have prevented that the aluminium film edge from taking off, again the normal seal body of the 3V lithium battery of pressure release.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of seal body of 3V lithium battery, comprise seal body lower cover and seal body upper cover, be provided with hermetically-sealed construction between described seal body lower cover and seal body upper cover, the centre of described seal body lower cover is provided with the pressure release circular hole, described Aluminium film paste is attached under seal body to cover described pressure release circular hole is covered, described seal body upper cover is provided with raised cap, be provided with steam vent on described raised cap, in described raised cap, packing ring is installed, described packing ring is the annular solid with a centre bore, described annular solid lower end is pressed in the aluminium film place covered under seal body, described centre bore is corresponding with described pressure release circular hole, be provided with air vent hole on the annular solid of described packing ring, described centre bore communicates with described steam vent by described air vent hole.
The upper end of annular solid evenly is provided with three separate boss, described fluting is two interval regions between boss, be provided with two steam vents on described raised cap, two steam vents are symmetrically distributed on raised cap, and the sector crosssection area of described fluting is greater than the sector crosssection area of boss.The processing of packing ring is more convenient, facilitate the packing ring installation simultaneously, aimed at steam vent without deliberately slotting, when the gas of inside battery is released, have at least the part that queues hole or two steam vents can be corresponding with fluting, the boss on packing ring can not blocked steam vent.
Described hermetically-sealed construction comprises bending structure and the sealing ring of seal body lower cover, and described sealing ring is arranged between the outward flange and bending structure of seal body upper cover.
Be provided with annular thermistor between the annular base of described seal body lower cover and the annular of seal body upper cover are following.This resistance is processed through special process by high molecular polymer and electric conducting material, and under the electric current normal operation of this resistance in circuit, impedance is less, and the heat of generation is also little; When overload or short circuit occur circuit, electric current sharply rises, and the PTC impedance is risen rapidly, limits large electric current and passes through, thereby play the effect of protective circuit or electrical appliance.
The annular solid lower end is provided with the first concentric convex tendon and the second convex tendon, the cross section of described the first convex tendon and the second convex tendon is tapered, the sharp-pointed section of described the first convex tendon and the second convex tendon is pressed in the aluminium film on annular relief, can push down better the aluminium film on annular relief.
Seal body lower cover center is provided with annular relief, and described pressure release circular hole is positioned at the center of annular relief, and the annular solid lower end is pressed in the aluminium film place on annular relief.
Compared with prior art, the utility model has the advantages that the lower end that utilizes packing ring pushes down the aluminium film edge, after battery air-pressure rises to normal burst pressure, make the gas can be from the normal explosion of pressure release circular hole in the middle of the aluminium film, avoid the deficiency because of attachment process, make the aluminium film not reaching normal burst pressure in advance from edge is de-, prevent the leakage of electrolyte.
The accompanying drawing explanation
Fig. 1 is cutaway view of the present utility model;
Fig. 2 is cutaway view of the present utility model;
The cutaway view that Fig. 3 is packing ring of the present utility model;
The vertical view that Fig. 4 is packing ring of the present utility model;
The enlarged drawing that Fig. 5 is A in Fig. 3;
The stereogram that Fig. 6 is packing ring of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
A kind of seal body of 3V lithium battery, comprise seal body lower cover 1 and seal body upper cover 2, be provided with hermetically-sealed construction between seal body lower cover 1 and seal body upper cover 2, the centre of seal body lower cover 1 is provided with annular relief 3, annular relief 3 centers are provided with pressure release circular hole 4, aluminium film 5 is attached on annular relief 3 pressure release circular hole 4 is covered, seal body upper cover 2 is provided with raised cap 6, be provided with steam vent 7 on raised cap 6, in raised cap 6, packing ring is installed, packing ring is the annular solid 9 with a centre bore 8, annular solid 9 lower ends are pressed on annular relief 3, centre bore 8 is corresponding with pressure release circular hole 4, be provided with air vent hole on the annular solid 9 of packing ring, centre bore 8 communicates with steam vent 7 by air vent hole.
The upper end of annular solid 9 evenly is provided with three separate boss 11, fluting 10 is two interval regions between boss 11, be provided with two steam vents 7 on raised cap 6, two steam vents 7 are symmetrically distributed on raised cap 6, and 10 the sector crosssection area of slotting is greater than the sector crosssection area of boss 11.
Hermetically-sealed construction comprises bending structure 12 and the sealing ring 13 of seal body lower cover 1, and sealing ring 13 is arranged between the outward flange and bending structure 12 of seal body upper cover 2.
Be provided with annular thermistor 16 between the annular base 14 of seal body lower cover 1 and the annular of seal body upper cover 2 following 15.It is tapered that annular solid 9 lower ends are provided with the cross section of the first concentric convex tendon 17 and the second convex tendon 18, the first convex tendons 17 and the second convex tendon 18, the aluminium film of sharp-pointed section on annular relief 3 that the first convex tendon 17 and the second convex tendon 18 are pressed.
Claims (7)
1. the seal body of a 3V lithium battery, comprise seal body lower cover and seal body upper cover, be provided with hermetically-sealed construction between described seal body lower cover and seal body upper cover, the centre of described seal body lower cover is provided with the pressure release circular hole, Aluminium film paste is attached under seal body to cover described pressure release circular hole is covered, described seal body upper cover is provided with raised cap, be provided with steam vent on described raised cap, it is characterized in that, in described raised cap, packing ring is installed, described packing ring is the annular solid with a centre bore, described annular solid lower end is pressed in the aluminium film place covered under seal body, described centre bore is corresponding with described pressure release circular hole, be provided with air vent hole on the annular solid of described packing ring, described centre bore communicates with described steam vent by described air vent hole.
2. the seal body of a kind of 3V lithium battery according to claim 1, is characterized in that described steam vent is arranged on the arc-shaped transition district on raised cap, and described air vent hole is the fluting that is arranged on the annular solid upper end, and described fluting communicates with described steam vent.
3. the seal body of a kind of 3V lithium battery according to claim 2, the upper end that it is characterized in that annular solid evenly is provided with three separate boss, described fluting is two interval regions between boss, be provided with two steam vents on described raised cap, two steam vents are symmetrically distributed on raised cap, and the sector crosssection area of described fluting is greater than the sector crosssection area of boss.
4. the seal body of a kind of 3V lithium battery according to claim 1, is characterized in that described hermetically-sealed construction comprises bending structure and the sealing ring of seal body lower cover, and described sealing ring is arranged between the outward flange and bending structure of seal body upper cover.
5. the seal body of a kind of 3V lithium battery according to claim 2, the annular that it is characterized in that the annular base of described seal body lower cover and seal body upper cover is provided with annular thermistor between below.
6. the seal body of a kind of 3V lithium battery according to claim 1, it is characterized in that the annular solid lower end is provided with the first concentric convex tendon and the second convex tendon, the cross section of described the first convex tendon and the second convex tendon is tapered, the aluminium film of sharp-pointed section on annular relief that described the first convex tendon and the second convex tendon are pressed.
7. the seal body of a kind of 3V lithium battery according to claim 1, is characterized in that seal body lower cover center is provided with annular relief, and described pressure release circular hole is positioned at the center of annular relief, and the annular solid lower end is pressed in the aluminium film place on annular relief.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203528034U CN203351679U (en) | 2013-06-18 | 2013-06-18 | Seal body of 3V lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203528034U CN203351679U (en) | 2013-06-18 | 2013-06-18 | Seal body of 3V lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203351679U true CN203351679U (en) | 2013-12-18 |
Family
ID=49751535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203528034U Withdrawn - After Issue CN203351679U (en) | 2013-06-18 | 2013-06-18 | Seal body of 3V lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203351679U (en) |
-
2013
- 2013-06-18 CN CN2013203528034U patent/CN203351679U/en not_active Withdrawn - After Issue
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131218 Effective date of abandoning: 20150429 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20131218 Effective date of abandoning: 20150429 |